用正确的介词或副词填空：
1.He received a letter _______my sister.
2.A number _______people are in the room.
3.He asked his father______some money.
4.I call _________my mother every week.
最好能为我讲讲填这些词的原因,thank you!
人气：444 ℃ 时间：2020-06-15 22:20:19
解答
1.from——receive a letter from sb——收到某人的来信
2.of——a number of——许多,大量
3.for——ask for——需要、请求,要求
4.up——call up——（给某人）打电话
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